They were arrested on Thursday and released on bail after signing a bond, police said.

The watchman and a contract worker of the park were also arrested in connection with the incident.

Though PETA activists originally scheduled to hold a protest on Wednesday against jallikattu, it was dropped at the last minute.

However, Ingrid Newkirk and the PETA activists had gone to Gandhi Park and blindfolded the statue of Mahatma Gandhi and hung a board 'reject cruel sport jallikattu.'

Following a complaint lodged by a Congress functionary, police registered cases against Ingrid and others for creating religious ill-feeling, defaming the national leader, trespassing and also under Tamil Nadu Open Places Prevention of Disfigurement Act.